> For the complete documentation index, see [llms.txt](https://yubit.gitbook.io/yubit/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://yubit.gitbook.io/yubit/other-help/announcements/feature-upgrade/openaiskill.md).

# Open API Signature Upgrade Notice

<figure><img src="/files/2nny5jj6U25ZQKzsnSKp" alt=""><figcaption></figcaption></figure>

Dear Partners,

To further enhance the security and stability of the Open API, YUBIT has upgraded the API signature generation mechanism.

Effective immediately, YUBIT Open API will support both the new and legacy signature methods during the transition period. You may continue using your current signature logic while preparing for the upgrade.

### Important Timeline

* From now until June 30, 2026: Both legacy and new signature methods will be supported.
* After June 30, 2026: Support for the legacy signature method will be discontinued. Only the new signature method will be accepted.

### Required Actions

To avoid any disruption to your API services, please complete the following before **June 30, 2026**:

1. Update your signature generation logic according to the latest API documentation.
2. Complete API integration testing using the new signature method.
3. Ensure all production systems have been migrated to the new signature mechanism.

### API Documentation

As the updated API documentation is relatively extensive, it will not be distributed through group channels. Our customer support team will provide the latest API documentation to each partner individually.

Please review the documentation and arrange for the necessary technical updates as soon as possible.

If you encounter any issues during the migration process, please contact our customer support team for assistance.

Thank you for your cooperation and continued support.

YUBIT Team